Closure for storage vessels.



c. HAMMER. CkOSURE-FOB STORAGE VESSELS.. APPLICATION FlLED MAR. 6.1916.

Patented Aug. 21, 1917.

1 k i, x 2 ,1 g a ,4 TTOR/VEY UNITED STATES-PATENT 0mm...

CHARLES HAMMER, OF QUEENS, NEW YORK, ASSIGNOR, BY DIRECT AN D MESNEASSIGN- MENTS, TO AMERICAN METAL CAP 00., OF BROOKLYN, NEW YORK.

CLOSURE ron sronaeii VESSELS.

To all whom it may concern: Y

Be it known that I, CHARLES HAMMER, a citizen of the United-States, anda resident of Queens, in the county of Queens and State of New York,have invented certain new and useful Improvements in Closures forStorage Vessels, of which the following is a specification.

I have invented an improvement in 010- sures for storage vessels; andparticularly closures that can be made by stamping out of sheet metaland used for the purpose of sealing up jars and bottles.

The object of m invention is to provide a cap or closure 0 the kind justmentioned which is constituted of a plurality of cooperating andinterfitting parts, so designed that they can each be applied to thevessel with despatch; which parts will engage each other after beingfitted to the vessel, in such a way that not only will the vessel beperfectly sealed, but also the cap will present a very neat and finishedappearance.

A further obj ect of my invention is to provide a ca consisting of aplurality of parts, pre erably two in number; one of which is in theform'of a substantially fiat disk having ackingv or a washer secured toone face; an the other of which is threaded to enable the same to bescrewed in place upon a jar or bottle and press the said disk with itspacking tightly against the mouth of the jar; whereby the possibility ofleakage will be eliminated.

The above and other objects and advantages of my invention will ap earfrom the following description taken in connection with the accompanyingdrawings. However,

the disclosure herein sets forth but one embodiment of my invention, andother constructions may be adopted that are similar in effect and ofsuch a nature as to fall within the meaning of the terms in which theappended claim is expressed. On the drawlngs:

Figure 1 is a sectional view taken transversely through a referred formof my improved closure, an a jar or bottle on which the same is used.

Fig. 2 is a bottom plan of a disk, showing the central part of my cap,having packing secured to its inner face; and

Fig. 3 is a section taken through a part of this disk in order to showthe manner 1n Specification of Letters Patent. Patented Aug. 21, 1917.Application filed March e, 1916. Serial No. 82,433.

which the packing and disk are made fast signed to engage similarthreads on the out: slde of the neck 5 of a storage vessel, such as ajar or bottle.

The disk 1 is substantially flat and is so shaped as to be provided onits upper face, as shown in the drawings, with a relatively low, widecircumferential rib 6; and on its lower face with a corresponding wide,shallow groove into which is disposed a packing or sealing ring 7. Thispacking or sealing ring is made of suitable compound and is retained inthe groove inthe lower or inner face of the disk 1 by turning over the.

outer edge of the disk against the packing 7, as indicated by thenumeral 8. The turned over edge 8 of the disk will pinch or crimp theadjacent corner of the packing 7 very firmly; and the opposite corner ofthe packing, which lies along the inner edge of the ring 7 will bepressed against a slo ing shoulder 9 formed by the inner perip cry ofthe rib 6. Hence the packing 7 will be prevented from becoming displacedfrom proper position; and will be firmly held by the conformation of thedisk just discussed. At the same time the substantial flatness of thedisk, which it is the object of my invention to' retain, is preserved;especially when the cap and disk are secured to a jar or bottle by meansof the ring 2. I further insure a substantial flatness of the disk 1 byelevating the same to a slight extent from below in the middle as shownat 10.

The internal diameter of the ring 2 above -mentioned is substantiallythe same as the threads 4 on the flange 3 upon the threads on the neckof the bottle or jar, the inner edge of the ring 2 will about coincidewith the inner edge of the rib 6. I preferably strengthen the ring byproviding the same with an annular rib or head 11 extending over itsupper or outer face; and a portion of this ring on the inside of thebead will be turned slightly downward and inward so as to fit snuglyagainst the top of the rib 6 adjacent the inner edge of the same.Consequently when the complete closure is fitted to the storage vesselthe disk 1 appears to be perfectly fiat and the shoulder along the inneredge of the rib 6 appears to be simply a continuation of the inward anddownward. passing edge 12 of the ring 2.

From the above it will be apparent that I have provided a cap which isexceedingly simple and can be readily ailixed to a vessel and removedtherefrom. When applied to a jar or bottle it will seal up the sameperfectly and present a very ornamental appearance.

The top of the rib 6 is shown as being rounded or curved transversely,but obviously it may be fiat. Moreover the portion of the ring 2 betweenthe r1b 11 and the upper part of the flange 3 may extend downward thesame as the edge'12; and this portion similarly engages the outer edgeor shoulder of the rib 6. In fact this portion of the ring 2 and theedge 12 may be so shaped as to be continuations of each other; andtherefore the rib 6 will be pressed down aaeaceo ing a comparativelywide and shallow arch portion connecting with the disk by a downwardextension that .forms a shoulder on the lower face of the arch, theouter edge of the arch portion being bent downwardly and inwardly toform a lateral groove facing said shoulder, and a fiat ring gasket ofcompressible sealing material engaging the lower face of the archportion and having its upper portion compressed between the inner wallof the shoulder and the inwardly projecting edge of the cover, to retainthe gasket in the cover to project a considerable distance below thecover and prevent contact of the cover with the ves-' sel when applied.

Signed at Brooklyn in the county of Kings and State of New York this 26day of October A. D. 1915.

r CHARLES HAMMER.

Witnesses:

CHRISTIAN H. MONEY, WILLIAM H. Bowman.

